Fans heading to the MCG tonight for the Geelong-Collingwood Qualifier could be hit by massive disruptions.

Hundreds of climate change protestors will converge on the city, promising maximum disruption.

Activists from the Extinction Rebellion will block busy peak hour intersections and roam the CBD from 5 o’clock.

Earlier this year, the UN released a report warning we had some 12 years to stem the effects of climate change before we face “catastrophic” consequences.